심장판막증의 외과적 치료

민용일,김상형,이동준,Min, Yong-Il,Kim, Sang-Hyeong,Lee, Dong-Jun 대한흉부심장혈관외과학회 1987 Journal of Chest Surgery (J Chest Surg) Vol.20 No.3

From September 1980 to July 1986, 135 cases of cardiac valve surgery were performed under the cardiopulmonary bypass. Out of 135 cases, single valve surgery was 114 cases including open mitral commissurotomy 17, mitral annuloplasty 2, mitral valve replacement 85, and aortic valve replacement 10 and double valve surgery was 21 cases. There were 68 males and 67 females ranging from 9 to 57 years of age. Early death within 30 days after operation was 17 cases [12.6%] and caused of death were ventricular arrhythmia 5, low cardiac output syndrome 4, excessive bleeding 3, pulmonary complication 2, and so on. Among 118 early survivors, 5 cases [5.1%] of late death were developed over a period of 2 to 72 months, and main cause of death was fatal bleeding complication associated with anticoagulation therapy. Symptomatically, 91.8% of patients were in NYHA functional class I or II at the end of the follow-up.

인태아 폐의 신경상피소체와 신경종말에 관한 미세구조적 연구

민용일,윤재룡,Min, Yong-Il,Yoon, Jae-Rhyong 한국현미경학회 1995 Applied microscopy Vol.25 No.1

Ultrastructure of nerves and their associated cells in the bronchiolar epithelium of the human fetal lung were studied with ultrastructural and immunohistochemical methods. The neuroendocrine cells were scattered along the basal part of non-ciliated respiratory epithelium and appeared as single cell (solitary neuroendocrine cell) or groups (neuroepithelial bodies). The solitary neuroendocrine cells were devoid of any detectable innervation, while the neuroepithelial bodies were associated with nerve ending containing morphologically afferent (sensory) and efferent (motor) intraepithelial terminals. The afferent nerve endings contained abundant mitochondria with long cristae. The efferent nerve endings were characterized by the presence of synaptic vesicles. Both types of nerve endings formed synaptic junction between nerve endings and neuroepithelial bodies cells. Serial sections of the intraepithelial nerves revealed that both morphologically afferent and efferent types of nerve endings may be formed by the same nerve fiber. By immunohistochemistry, bombesin and serotonin were localized in solitary neuroendocrine cells and neuroepithelial bodies of human fetal lung from various prenatal age groups. These results suggest that the neuroepithelial bodies cells of the human fetal lung have neuroreceptor function.

변형 Fontan 술식을 이용한 선천성 심기형증 치험 2

민용일,안병희,이동준,Min, Yong-Il,An, Byeong-Hui,Lee, Dong-Jun 대한흉부심장혈관외과학회 1987 Journal of Chest Surgery (J Chest Surg) Vol.20 No.3

Recently, direct atriopulmonary anastomosis was performed in 2 patients without using pericardium or prosthetic material. Case 1 A 13-year-old male patient whose diagnosis was tricuspid atresia [type lb] received direct atriopulmonary anastomosis successfully with good clinical and hemodynamic results. Nine months after operation, he has an increased exercise tolerance. Case 2 A 4-year-old female patient whose diagnosis was DORV with pulmonary atresia in A-V discordance had a formidable surgical challenge. A large-diameter direct atriopulmonary anastomosis was performed after the closure of the right atrioventricular valve. Her postoperative course has been even in 20th postoperative day.

개심술 500례의 임상적 고찰

민용일 대한흉부심장혈관외과학회 1987 Journal of Chest Surgery (J Chest Surg) Vol.20 No.1

From May 1977 to June 1986, 500 cases of open heart surgery were performed under the cardiopulmonary bypass. There were 278 male and 222 female patients ranging from 6 months to 69 years. 363 cases[73.6%] were congenital heart diseases, and 137 cases[27.4%] were acquired heart diseases, which were 33 valvular diseases, 3 myxomas and 1 IVC obstruction. There were 363 congenital heart anomaly with 35 operative deaths[9.6%], consisting of 279 acyanotic cases with 12 deaths [4.3%] and 85 cases of cyanotic cases with 23 deaths[28.4%]. In 133 patients of acquired valvular disease, 124 valves were implanted and operative death of valvular disease was 12%. Finally the operative mortality was 9.6% in congenital anomaly, and 12.4% in acquired heart disease, overall mortality rate was 10.4%.

Fallot 4징증의 근치수술후 예후에 영향을 미치는 요소

민용일,오봉석,이동준,Min, Yong-Il,O, Bong-Seok,Lee, Dong-Jun 대한흉부심장혈관외과학회 1987 Journal of Chest Surgery (J Chest Surg) Vol.20 No.1

Twenty six patients were operated a total correction of tetralogy of Fallot between Jan., 1984 and July, 1985 at the Dept. of thoracic and cardiovascular surgery, Chonnam University Medical School, and a comparison between the survived group [n = 18] and the dead group [n = B was performed to detect factors influencing laboratory data, cineangiographic findings, operative findings and methods, and pump time. Following results were obtained, 1. There was no significant difference between two groups in the preoperative P.O2 and hematocrit level. 2. The size of the interventricular defect was not related to the operative mortality. 3. There was a significant difference in mortality rate between combined type of stenosis of pulmonary artery, valve and infundibulum and other types of right ventricular outflow tract stenosis. 4. There was a significant difference in mortality rate between the transannular patch reconstruction and other types of operative procedure. 5. There was no significant difference between two groups in total bypass time and aortic time. 6. There was no significant difference between two groups in left ventricular end diastolic volume and right ventricular end diastolic volume. 7. The operative mortality was related to the ratio of the diameter of the pulmonary valve annulus or each pulmonary artery to the ascending or descending aorta in cineangiographic findings, but there was no statistical significance of which probably is due to the lack of the total number of patients.

최근 1년간 응급실 내원환자 21,700명에 대한 임상적 분석

민용일 대한응급의학회 1994 대한응급의학회지 Vol.5 No.2

21,700 cases of patients who visited Department of Emergency Medicine in Chonam University Hospital from August 1, 1993 to July 31, 1994 were reviewed. The results were as follows : 1. In 21,700 total visits(average 59.5 in a day), male to female ratio was 1.47 : 1 and the peak age group was 3rd decade(16.3% of total visit). 2. Disease to injury ratio was 2.1 : 1. In disease, male to female ratio was 1.2 : 1. A male predominece was found among injury as 2.2 : 1, respectively. The major groups of disease were children younger than 10 years of age and adults older than 50 years. In contrast, 42.3% of total injuries occured in 3rd and 4th decades. 3. The ratio of self-visit to transfer from other hospitals was 3 : 1, The majority(83.3%) used non-emergency vehicle such as taxi or bus. In contrast, the use of rescue services or ambulances were extremely rare. 4. The visiting patients were composed of internal medicine as 24.6%, pediatrics as 12.6%, surgery as 36.1%, and emergency medicine as 21.7%. The disposition was composed of discharge as 60.5%, admission to ward as 29.5%, and transfer to other hospital as 6.5%. 5. Averaged transit time in emergency room was 18.5 hours ; 31.3 hours for admission to ward, 14.0 hours for discharge, and 7.8 hours for transfer to other hospital, respectively. 6. Monthly visit was relatively even. Visits increased slightly on April, May, June, July, and October. 7. In daily visit, it increased slightly on Saturday and Sunday. 8. The majority of patients visited to emergency room between noon and midnight. In contrast, visits decreased abruptly form 1 : 00 AM. 9. The number of DOA was 320. In addition, the number of DAA and hopeless discharge was 644. Thus, mortality rate was 3.0%.

선형 리스트상의 병렬 병합 알고리즘

민용식 한국음향학회 1991 韓國音響學會誌 Vol.10 No.5

본 논문은 병렬 병합 알고리즘 중에서 선형 리스트상에서의 병합 시키기 위한 알고리즘을 제시 하고자 하는데 있어서 다음 두가지에 그 주된 목적이 있다. 1) 병렬 병합 알고리즘을 위한 ADT 를 제시하고 있다. 2) 선형 리스트상에서 병합되어지는 MKLP 알고리즘을 제시코저 한다. 이때 mklp 방 법은 P(1<=P<=N)개의 프로세서를 이용하고 그리고 SIMD-SM(EREW-PRAM) 모델 상에 구현이 되는 병렬 병합 알고리즘을 구현코저 한다.

교육과정 이론과 실제의 발전: 국제 비교, 간학문적 담론, 그리고 연구와 현장의 교류 : 자유주제 발표 분과편 ; 교사양성 교육과정 : 교육대학에서의 "통합 교과" 프로그램의 실태 및 재구성 방안

민용성 한국교육과정학회 2006 한국교육과정학회 학술발표논문집 Vol.2006 No.-

Effect of the Position of Immobilization Upon the Tensile Properties in Injured Achilles Tendon of Rat

민용,서정환,권영배,이민호 대한재활의학회 2013 Annals of Rehabilitation Medicine Vol.37 No.1

Objective To examine the effect of the posture of immobilization upon the tensile properties in injured Achilles tendon of rat for an initial period of immobilization.Methods Forty-two Sprague-Dawley rats were used in the present study. Eighteen rats received a total tenotomy of the right Achilles tendon to mimic total rupture and were divided into three groups comprising of 6 rats each. Ankles of group A were immobilized at 60° of plantarflexion. Ankles of group B were immobilized at neutral position. Whereas, those of group C were immobilized at 60° of dorsiflexion. Other 18 rats received hemitenotomy to mimic partial rupture and were divided into three groups. The remaining 6 rats were kept free as control. After 14 days, we dissected the tendons and analyzed maximum force, stiffness, and energy uptake during pulling of the tendons until they ruptured. The tendons of 6 rats in each group and control were reserved for histology. Picrosirius staining was done for the analysis of collagen organization.Results In total tenotomy, tensile properties were significantly different between the control and the intervention groups (p<0.05). Group C showed relatively higher values than the groups A and B with respect to tensile properties (p>0.05). In partial tenotomy, tensile properties were significantly different between the control and the intervention groups (p<0.05). Group C showed significantly higher value than other intervention groups in terms of maximum force and energy uptake (p<0.05). The semiquantitative histologic grading scores were assigned for collagen organization. The scores for dorsiflexion posture were higher than the ones for plantarflexion.Conclusion Dorsiflexion posture in partial ruptured Achilles tendon showed better functional recovery than other immobilized postures. In total ruptured case, the tensile properties showed increasing tendency in dorsiflexion posture.

PHDCM : Efficient Compression of Hangul Text in Parallel

민용식,Min, Yong-Sㅑk The Acoustical Society of Korea 1995 韓國音響學會誌 Vol.14 No.e2

본 논문은 3가지 상태의 전이 그래프를 이용해서, 병렬 컴퓨터인 MasPar에 적합한 한글에 대한 효율적인 부호화를 제시하고자 한다. 본 논문에서 제시한 PHDCM(Parallel Hangul Dynamic Coding Method)의 방법을 이용한 경우에 한글 한음절당 약 3.5비트이상의 축약이 가능함을 보였다. 그리고 기존의 방법과 비교해 볼때 1비트이상의 축약이 가능함도 보였다. 또한 약 천만자의 한글을 이용해서, 병렬 컴퓨터인 MasPar에 프로세서 64개를 이용하여 실제 실행을시켰을때의 가속도 (Speedup)은 49.314임을 보였다. This paper describes an efficient coding method for Korean characters using a three-state transition graph. To our knowledge, this is the first achievement of its kind. This new method, called the Paralle Hangul Dynamic Coding Method(PHDCM), compresses about 3.5 bits per a Korean character, which is more than 1 bit shorter than the conventional codes introduced thus far to achieve extensive code compression. When we ran the method on a MasPar machine, which is on SIMD SM (EFEW-PRAM)., it achieved a 49.314-fold speedup with 64 processors having 10 million Korean characters.